* {
    margin: 0;
    padding: 0;
    list-style: none;
    text-decoration: none;
    font-style: normal;
}

a {
    color: #000;
}

.flex {
    display: flex;
    justify-content: center;
    align-items: center
}

//主题元素
$hui:#929292;
$font:#858585;
$col: #ff9344;
// 240/750 *100=vw
@function vw($px) {
    @return $px / 750 * 100+vw;
}